Circadian rhythms of saliva melatonin in ADHD, anxious and normal children. Paclt I, Ptácek R, Kuzelová H, Cermáková N, Trefilová A, Kollárová P, Cálková T, Csemy L, Cíhal L. Journal Article 2011; 32(6): 790-798 PubMed PMID: 22286786 Keywords: Anxiety Disorders:metabolism, Attention Deficit Disorder with Hyperactivity:metabolism, Child, Circadian Rhythm:physiology, Humans, Melatonin:metabolism, Saliva:chemistry,. Citation BACKGROUND: Attention-deficit/hyperactivity disorder (ADHD) and anxiety disorders are the most frequent psychiatric disorders in children...... Read abstract Full text PDF